If you want to track your Pos Laju parcel, EMS, or Pos Malaysia Registered Post (Pos Daftar). Below are the website that allow you to do so
Pos Malaysia / Pos Laju Official site
Pos Malaysia Official Tracking Site (Track EMS, Registered post & Pos Laju) : http://pos.com.my/postal-services/quick-access/?track-trace
Pos Laju Official Tracking Site : http://poslaju.com.my/track-trace-v2/
Third Party / Non Official site
Aftership (Track EMS, Registered post & Pos Laju) : https://www.aftership.com/en/courier/malaysia-post
Easyparcel (Track EMS, Registered post & Pos Laju) : https://secure.easyparcel.my/pass/?pg=TrackWidgetVertical